JPH0752884A - Ahead/astern double action oar - Google Patents

Abstract

PURPOSE:To provide an ahead/astern double action oar which is easy to handle/ store and the like, can be mounted to any place required on the broad-side, does not require to be to the point and/or be skillful even on the part of a beginner, and enables rowing actions for ahead and astern motions to be surely carried out. CONSTITUTION:For this reason, the oar is composed of a drive arm section 1 including a grip section 1a and a drive fitting 1b, a main body section 2 including a web section 2a and a main body fitting 2b, and of a mounting fitting 4 including a rocking shaft 4a, and pivot shafts A/B3a/3b are provided over the upper surface of the mounting fitting 4, and are so constituted that rowing motions by the grip section 1a are transmitted to the main body section 2 via the fixed pin 1c of the drive fitting 1b and the slide groove 2c of the main body fitting 2b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oar (paddle) as a propulsion ship tool used for rowing in preparation for both sides of a boat or the like, and more particularly to an oar which can be moved forward and backward.

[0002]

2. Description of the Related Art For example, rowing oars of this kind, which are provided on both sides of a boat for carrying a person for leisure in lake water, are well known. It is supported by a deformed Y-shaped metal fitting that is erected vertically on the upper part so that it can be rotated around a vertical axis. Turn the tip of the boat on the water in the direction of movement of the boat, which is the direction behind the rower, and then submerge the water at the tip of the boat, pull both hands toward you and drive the boat to propel it, and repeat this operation to move forward. Was configured to do.

FIG. 2 shows an essential part of an example of a conventional oar receiving portion. Reference numeral 21 is a modified Y-shaped oar receiving fitting, which is rotatably mounted in a vertical hole on the sideboard. The oar 20 is suitable for gripping after the narrow end portion is inserted from the opening of the receiving fitting 21. It was configured to be slid outward to each position and put into use.

[0004]

However, in the conventional type oar as described above, the degree of freedom of the relative position of the oar 20 in the receiving metal fitting 21 is too large, and the oar 20 is too large.
Since it is free to rotate around its axis and move in the axial direction, it is difficult for a beginner to maintain its proper axial rotation angle and axial position at all times during rowing operation, and therefore sufficient propulsion force can be obtained. It was always not present or the support fitting 21 came off.

The above description has been made on the normal forward drive when the boat is propelled in the backward direction of the rower. On the contrary, when the boat is to be temporarily moved backward, when the boat pushes the arm pushing drive posture, Therefore, it becomes even more difficult to maintain the proper angle / position, and it has been experienced by beginners that it is practically impossible to operate.

Furthermore, since the left and right oars cannot be disassembled as an integral type, they are inconvenient for transportation and storage, and there is a restriction that the mounting position on the boat is limited to the existing receiving metal fitting position.

The present invention has been made in view of the above-mentioned problems of the conventional type of oar, is disassembled, is convenient for handling and storage, and is also limited in the mounting position on a boat. With this, the rower can always easily maintain the proper axial rotation angle and axial position of the left and right oars, and never accidentally disengages from the receiving bracket. Also aims to provide an easy all system.

[0008]

Therefore, in the present invention, a pair of oars of this kind are provided at the other end of the grip portion at the drive arm portion to which the driving metal fitting is fixedly attached, and at the other end of the web portion. It is composed of a main body part to which a main body metal fitting is fixedly mounted, and a mounting metal fitting equipped with a swing shaft that can be swung around a horizontal axis along the side of the upper side of the support metal fitting clamped and fixed to the port side. A pivot axis A capable of pivoting in a horizontal plane around a point of the base portion of the driving metal fitting is provided at one end of the upper flat surface portion, and the other end of the upper flat surface portion is centered around a single point of the base material fitting portion. A guide means is provided in which a pivot shaft B capable of pivoting is provided in a horizontal plane, a fixing pin is erected on the other end of the pivot shaft A of the drive fitting, and this pin is bored on the other end side of the pivot shaft B of the body fitting. The object of the present invention is to achieve the above object by being fitted inside and configured to be slidable. .

[0009]

According to the above-described all system according to the present invention, each component can be assembled and disassembled, which is convenient for handling and storage, and the mounting location on the boat can be selected relatively freely. In addition, since proper axial center rotation angles and axial positions of the left and right oars necessary for normal rowing motion are always fixed, even beginners can easily drive forward and backward without requiring skill.

[0010]

EXAMPLES This oar will be described below based on examples. FIGS. 1A and 1B show one embodiment of a pair of bilaterally symmetrical oars according to the present invention only for the right arm, and FIG. 1A is a partially sectional side view and FIG. 1B is a top view. In the diagram (b), arrow F indicates the forward direction of the boat, M indicates a rower seated on the left and right center of the boat with his back in the forward direction F, and Hr indicates the right hand.

(Structure) In FIG. 1, reference numeral 1 denotes a (right hand) drive arm portion, which has a wooden grip portion 1a at the left end, and a substantially rectangular drive arm metal fitting 1b at the right end inserted into a wooden slit portion. It is fixed by two rivets, and can pivot about a pivot axis A3a provided at the left end of a mounting member 3 described later at one point of its root portion.

Reference numeral 2 denotes an oar body, a tip portion of which forms a web portion 2a, and a left end of which has a substantially rectangular body metal fitting 2b welded to a nipping metal fitting 2d and joined to the main body 2 by a bolt. It is mounted so that it can pivot around a pivot B3b provided at the right end of the mounting bracket 3 at one point of its root.

Further, a sliding groove 2c for guiding in a substantially longitudinal direction is formed at the other end of the body metal fitting 2b, and a fixing pin 1c erected at the tip of the driving metal fitting 1b is provided in the groove 2c. It is slidably engaged.

The mounting bracket 3 has a hat-shaped cross section having a bottom surface as an upper surface, and the respective pivots A / B 3a / 3b are fixedly mounted on the upper surface, and are mounted by horizontal swing shafts 4a of lower ears on both side surfaces. The metal fitting 3 is swingable with respect to the support metal fitting 4.

The supporting metal fitting can be attached at an arbitrary position with the fixing screw 4b by sandwiching the boat sideboard between both side surfaces.

(Operation) The rower M holds the grip portion 1a with the right hand Hr.
When gripping and moving back and forth, the fixed pin 1c moves in the sliding groove 2c due to the movement around the pivot A3a which is the fulcrum of the drive arm 1.
The main body 2 can be reciprocally moved back and forth around the pivot B3b, which is a fulcrum, through a pair of left and right side oars (not shown) as a pair of bilaterally symmetrical oars, without any special procedure or skill. It is possible to repeat a reliable rowing motion in both forward and backward directions with almost the same pattern.

(Other Embodiments) The structures / materials and the like of the respective portions of the above embodiment are not limited to those shown in the drawings, and it goes without saying that various modifications may be made.

[0018]

As described above, according to the all system of the present invention, the main components are disassembled / assembled, so that they are convenient to handle and store, and can be attached to a desired portion of a boat. As a result, even a beginner can perform a reliable rowing motion in any of forward and backward propulsion without requiring a procedure or skill.

[Brief description of drawings]

FIG. 1 is a side view and a plan view of a right-hand oar according to an embodiment.

FIG. 2 is a diagram showing an example of a conventional oar receiving portion.

[Explanation of symbols]

 1 Drive Arm 1a Grip 1b Drive Metal 2 Main Body 2a Web 2b Body Metal 2c Sliding Groove 3 Mounting Metal 3a Axis A 3b Axis B 4 Support Metal 4a Swing Axis 4b Fixing Screw 5 Sideboard

Claims (1)

[Claims] 1. A driving arm portion having a driving metal fitting fixed to the other end of the grip portion, a main body portion having a main metal fitting fixed to the other end of the watering portion, and a support metal fitting clamped to the port side. It consists of a mounting bracket equipped with a swinging shaft that can swing about a horizontal axis along the upper port, and one end of the upper flat surface part of this mounting bracket is located in a horizontal plane centering on a point of the base part of the driving bracket. A pivot axis A that can be pivoted is provided, and a pivot axis B that is pivotable in a horizontal plane around a point of the root portion of the main body fitting is provided at the other end of the upper flat portion, and the other pivot axis A of the drive fitting is provided. A forward and backward movable oar characterized in that a fixing pin is provided upright at the end, and this pin is slidably fitted into a guide means formed at the other end of the pivot B of the body fitting. .